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| author | Michael Keppler <Michael.Keppler@gmx.de> | 2018-07-29 07:53:11 +0200 |
|---|---|---|
| committer | Matthias Sohn <matthias.sohn@sap.com> | 2019-06-10 19:59:17 +0200 |
| commit | e9abe09809097b431cf2acc50066435ea2cc0a53 (patch) | |
| tree | 635ee0586ea4a6ba496e60d35e39b0246f4fa8fb /org.eclipse.jgit | |
| parent | 8a2e221096f38ef0ab3d2e75d8ac81ad189695b0 (diff) | |
| download | jgit-e9abe09809097b431cf2acc50066435ea2cc0a53.tar.gz jgit-e9abe09809097b431cf2acc50066435ea2cc0a53.zip | |
Retry loading config when locked by another process
When loading the config, a FileNotFoundException may occur if the file
exists but cannot be read (see [1]). This is the case on Windows with a
virus scanner checking the file. Therefore if the file exists and that
exception is thrown, retry multiple times, similar to how this was
already implemented for IOException.
[1] https://docs.oracle.com/javase/8/docs/api/java/io/FileNotFoundException.html
Bug: 529522
Change-Id: Ic5dc3b7b24bb0005d6256ed00513bc7c0b91e613
Signed-off-by: Michael Keppler <Michael.Keppler@gmx.de>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Diffstat (limited to 'org.eclipse.jgit')
3 files changed, 21 insertions, 2 deletions
diff --git a/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties b/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties index afa8761740..df42dc757b 100644 --- a/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties +++ b/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties @@ -139,6 +139,7 @@ configSubsectionContainsNewline=config subsection name contains newline configSubsectionContainsNullByte=config subsection name contains byte 0x00 configValueContainsNullByte=config value contains byte 0x00 configHandleIsStale=config file handle is stale, {0}. retry +configHandleMayBeLocked=config file handle may be locked by other process, {0}. retry connectionFailed=connection failed connectionTimeOut=Connection time out: {0} contextMustBeNonNegative=context must be >= 0 diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java index 4d0d051562..bdaef5a366 100644 --- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java +++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java @@ -200,6 +200,7 @@ public class JGitText extends TranslationBundle { /***/ public String configSubsectionContainsNullByte; /***/ public String configValueContainsNullByte; /***/ public String configHandleIsStale; + /***/ public String configHandleMayBeLocked; /***/ public String connectionFailed; /***/ public String connectionTimeOut; /***/ public String contextMustBeNonNegative; diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileBasedConfig.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileBasedConfig.java index 2b31ebd8e3..fc6f4a39cd 100644 --- a/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileBasedConfig.java +++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileBasedConfig.java @@ -148,7 +148,8 @@ public class FileBasedConfig extends StoredConfig { */ @Override public void load() throws IOException, ConfigInvalidException { - final int maxStaleRetries = 5; + final int maxRetries = 5; + int retryDelayMillis = 20; int retries = 0; while (true) { final FileSnapshot oldSnapshot = snapshot; @@ -177,6 +178,22 @@ public class FileBasedConfig extends StoredConfig { } return; } catch (FileNotFoundException noFile) { + // might be locked by another process (see exception Javadoc) + if (retries < maxRetries && configFile.exists()) { + if (LOG.isDebugEnabled()) { + LOG.debug(MessageFormat.format( + JGitText.get().configHandleMayBeLocked, + Integer.valueOf(retries)), noFile); + } + try { + Thread.sleep(retryDelayMillis); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + } + retries++; + retryDelayMillis *= 2; // max wait 1260 ms + continue; + } if (configFile.exists()) { throw noFile; } @@ -185,7 +202,7 @@ public class FileBasedConfig extends StoredConfig { return; } catch (IOException e) { if (FileUtils.isStaleFileHandle(e) - && retries < maxStaleRetries) { + && retries < maxRetries) { if (LOG.isDebugEnabled()) { LOG.debug(MessageFormat.format( JGitText.get().configHandleIsStale, |